Surface corrosion protection detergent compositions containing polyvalent metal compounds and high levels of low foaming, nonionic surfactants

Active Publication Date: 2006-03-30
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0074] Suitable particle sizes may range from about 10 micron to about 2000 microns. Alternatively, suitable particle sizes may range from about 100 microns to about 1500 microns, from about 200 microns

Problems solved by technology

The current consensus amongst manufacturers is that the glassware corrosion problem occurs during the washing cycle of an automatic dishwashing appliance and may be the result of two separate phenomena acting-silica hydrolysis and metal ion leaching.
Glassware surface damage also results when chelate/metal ions on the glassware surface are removed during the wash cycle by the presence of a builder in the wash liquor.
The removal of chelate/metal ions causes the surface to become less durable and less chemically resistant.
After several wash cycles in an ADW appliance, both phenomena can cause visible, unwanted damage to glassware in the form of cloudiness, abrasions, scratches, and streaks.
Although some manufacturers have tried to overcome these problems with the incl

Method used

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  • Surface corrosion protection detergent compositions containing polyvalent metal compounds and high levels of low foaming, nonionic surfactants
  • Surface corrosion protection detergent compositions containing polyvalent metal compounds and high levels of low foaming, nonionic surfactants

Examples

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examples

[0085] The following examples of ADW detergent compositions are provided for purposes of showing certain embodiments, and as such are not intended to be limiting in any manner.

EXAMPLESIngredients12345STPP / SKTP / KTPP33.033.033.033.430.7Sodium citrate————33.6Hydrozincite0.10.10.10.10.1Sodium carbonate19.019.028.026.0—Sodium silicate7.87.84.24.3—LFNI surfactant18108810Dispersant polymer——4.3——Sodium hypochlorite———1.1—Sodium perborate12.812.89.3——Catalyst / activator20.0130.0130.013——Protease enzyme2.22.20.3—1.3Amylase enzyme1.71.70.9—0.2Aesthetic enhancingBalanceBalanceBalanceBalanceBalanceagents / Fillers / Water

1POLY-TERGENT ® SLF-18B by Olin Corporation

2Pentamine acetate cobalt (III) / sodium nonanoyloxybenzene sulfonate

[0086] With reference to the polymers described herein, the term weight-average molecular weight is the weight-average molecular weight as determined using gel permeation chromatography according to the protocol found in Colloids and Surfaces, Physico Chemical...

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Abstract

Automatic dishwashing detergent compositions and compositions of matter, having polyvalent metal compounds and high levels of low-foaming, nonionic surfactants, are provided for protecting glassware from corrosion.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of U.S. Provisional Application No. 60 / 613,695, filed Sep. 28, 2004.FIELD OF THE INVENTION [0002] The present invention relates to protecting glassware surfaces from corrosion using automatic dishwashing detergent compositions. More particularly, the present invention relates to automatic dishwashing detergent compositions and compositions of matter, having polyvalent metal compounds and high levels of low-foaming, nonionic surfactants. BACKGROUND [0003] Most consumers agree that the corrosion of glassware from use of detergent compositions in automatic dishwashing (ADW) is one of their most serious unmet needs. The current consensus amongst manufacturers is that the glassware corrosion problem occurs during the washing cycle of an automatic dishwashing appliance and may be the result of two separate phenomena acting-silica hydrolysis and metal ion leaching. Iridescence and clouding of glassware surfac...

Claims

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Application Information

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IPC IPC(8): C11D3/39
CPCC11D1/72C11D1/721C11D1/722C11D3/0026C11D3/0073C11D3/044C11D3/2075C11D3/048C11D3/06C11D3/08C11D3/10C11D3/1213C11D3/046
Inventor SONG, BRIAN XIAOQING
Owner THE PROCTER & GAMBLE COMPANY
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